Improvement in furnaces for desulphurizing ores



i'niet State? aan eine; y

JONATHAN GEORGE TROTTER, OF NEWARK, NEW JERSEY.

Letters 'Patent No. 109,559, dated November 22, 1870.

. IMPRQVEMENT IN FURNACES- FOR DESULPHURIZING ORES..

The Schedule referred to in these Letters Patent and making part of the same.

therefrom into the oven for the escape of the heated' vapor or steam into the oven, to combine with the gases generated therein to promote the operation of desulphurizing the ores.

Second, incombining and arranging, with a furnace and desulphurizing-oven, a. series of tlues whereby the heat and gases ofthe furnace are carried over the oven, and down and through the forward or return fines under the same, and thence into lines at opposite sides of the oven, from whence it escapes through vents in thc oven to commingle with and act upon the ores to free the oxygen therefrom.

But to describe my inventionY more particularly, I will refer to the accompanying drawing forminga part of lthis specification, the -sarne letters ot' reference wherever they occur referring to like parts.

Sheet l, Figure l is a longitudinal cut section of the furnace and oven on the line x at, tig. 4.

Sheet l, Figure 2 is a plan view of the same through line x1 xl, iig. l.

Sheet 2, Figure 3- is a transverse cut section cf the same through the line :v2 x", figs. 1 and 4.

Sheet 2, Figure 4 is a plan view of the same through the line ar rv, figs. l and Letter A represents thc outer walls of the furnace and oven, made of any of the well-known materials for such purposes.

B is the fire-place, and

C tl'legrate-bars, underneath which is a closed ashpit, ash-pit, into which atmospheric air is forced to support the combustion ofthe fuel.

Behind the tire-place is arranged the dcsulphurizingoven I), having an arched root', E, somewhat like a reverberatory furnace, and separated from the replace by a wall or bridge, l?, in which is formed a chamber, G, having a series of outlet-holes AH, leading into the oven.

lhis chamber is intended as a receptacle for steam, which is let into it through the sides ot' the furnace. by suitable pipes h2, and on reheating therein, escaping into the oven, through the holes H, to combine with' the gases and ores to promote the desulphurizing process.

Letter I is a flue between the roof of .the oven and I the shell of the oven, through which the llame and gases from the furnace escape to lthe'bacli end of the oven, wnere it descends through the openings J, and thence through a central fine, K, under thehbed L of the oven, toward its front end, (see arrows, fig. 4,) and then back through the-return-flues M.

From this point it then passes up into the side ues N, at each side of the oven, and escapes there from through the perfo'ratious I, into the oven, and over and upon and through the ores to promote the deoxidizing process.

' 'I o further promote the desulphurizing operation, a

*steam-chamber 0r flue, Q, is formed in the Sides of the oven just above the side or gas-fines N.

Into this line or chamber Q steam iseintroduced through the pipes It, and escapes thereti'onr-by the holes S through the `sides ot' the oven into the same, where it unites with the steam let in through the bridge to combine with the ores to promote the disengagement of the sulphur therefrom,

For the Vpurpose of regulating thefpressure ofthe gases in thc furnace or oven, an adjustable damper, T, is arranged on thel lever V to close the toplof thc chimney \V, at the .discretionof the attendant, to limit the escape of the gases from the furnace.

Letter Y is a charging-hole through the top of the oven, througlr which the 'ore is intro'luccd, and

Z is an opening in the back end otl the oven, for

the purpose of drawing off the ore, and raking and stirring it up when necessary during the operations of desulphurizi'ng or deoxidizing it.

Having now described my invention,

I will proceed to set forth what I claim and desire to secure by Letters Patent.

1. rlhe combination of the bridge F with a, steamchamber Gand vents 1I, substantially as described, and for the purposes hercinbefore set fort-h.

L. The combina-tion of the oven D with the vapor of water orv steam-flue or chambers Q, and vents S, substantially as dcscribelhaud for the purposes hereinbefore set forth.

3. The combination of theV oven D with ucs K, M, and N, and'vents l, for discharging the gases in a diffused state into the oven, substantially as described, and for the purposes hereinbefore set forth. l

JONATHAN GEORGE TROTTER.

Witnesses CHARLES L. BARBIN, FRANKLIN BARRITT. 

